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Determine the crystallisation temperature of the solution potassium nitrate at different concentrations and use information to find out the standard enthalpy of potassium nitrate.
Member rating: No Rating | Words: | Submitted: Thu Mar 11 2004
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Introduction Stability Stable. Strong oxidizer - contact with combustible material may cause fire. Incompatible with combustible materials, and strong reducing agents. Toxicology Harmful if swallowed. May cause reproductive disorders. Aim The aim of this experiment is to determine the crystallisation temperature of the solution potassium nitrate at different concentrations and use information to find out the standard enthalpy of potassium nitrate. Equipment and reagents * Boiling tubes * Dark card * Bunsen burner * Thermometer * Weighing scale * Burette (50cm3) * Clamp * Stand * Potassium nitrate * Deionised water/ distilled water Safety * Wear goggles for eye protection at all times. * Laboratory coats must be worn at all times. * Wear gloves to avoid chemical contact to skin, potassium nitrate. * Long hair was tied back when Bunsen burners were used. Procedure 1. 10g of potassium nitrate were weighed out and placed into a boiling tube, and then the exact mass was noted in a result table. 2. Exactly 8.0cm3 of...
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